I have never been happier with a truck purchase than I am with my LML ( 2013 bought at 80,000 miles; now approx. 93,000 mi.).
It does everything expected of it so well. ( primary use is towing my "toy" trailers - one is our three axle boat trailer, the other is my "box" / hobby car trailer - both "bumper pull" of about 1,300 lbs. load on the hitch - each weighs approx. 11,000 lb). Ocassional use as a "2nd car").
I am especially impressed with its ability to handle the meanest long up-hill grades on I-40 here in the high country of northern Arizona, combined with its ability to handle the extremes of temp. out on the Mojave Desert in the summer.
Yes, to get it the way I like it meant I treated it like a "do-it-yourself" kit...meaning did the CP-3 BEFORE a failure, air shocks with one spring leaf removed, to give a better more controllable ride.
To insure no problems with the DPF, plan on having it removed from the vehicle, cut apart, and PROPERLY cleaned, oh...say at 100,000 intervals ( at one of the facilities that does this for the DPF's on the big OTR trucks - I personally believe the "forced regen" that becomes necessary from time to time is hard on the truck).
If you live like I do in a "non-inspection" area, you might consider certain "parts relocations" that will result in your engine oil staying cleaner, and your fuel mileage improving by at least 3 - 5 mpg, and no more of those weird harmful "on road" DPF cleaning cycles.
Just remember that Greta Thornberg will hold you personally responsible for ending life here on Planet Earth in only the next 7 years, AND you will be held personally responsible for the deaths of all those cute little fuzzy chinned bunny wabbets.
Should you decide to "fix" your truck so as to become a murderer of the cute little fuzzy-chinned bunny wabbets, & want to deprive Greta Thurnberg of her childhood......bear this in mind - the "ecology freaks" are becoming more politically powerful every year.
So save every bolt, nut washer, gasket, etc. along with all of the hardware that came with your truck when new - it is possible in the future we MAY have to put all that stuff back in order to re-register our trucks.
There was a bill in Congress last year that would have turned our entire country into an "inspection" zone...it failed. This time.